Car-truck.



PATENTED FEB. 12, 1907.

- W. s. ADAMS.

OAR TRUCK.

APPLICATION FILED MAY 16, 1906- N. i A

V N\ Q. v R f R ii n n v M Q w UNITED STATES PATENT FICE.

WALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN A. BRILL, OF PHILADELPHIA, PENNSYLVANIA.

CAR-TRUCK.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed May 16,1906. Serial N0. 317,090.

To all whom 7175 may concern:

Be it known that I, WALTER S. AnAMs, a citizen of the United States, and a resident of the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Invention in Car- Trucks, of which the following is a specification.

The object of my invention is to provide a car-truck which will carry a spring-plank in such a manner that it will be resiliently supported and at the same time will have a minimum tendency to move laterally of the truck-that is, in the direction of its length. This object is accomplished by means of my invention, one embodiment of which is hereinafter set forth.

For a more particular description of my invention reference is to be had to the accompanying drawings, forming a part hereof, in which Figure 1 is a side elevation of one end of a truck. Fig. 2 is a section taken on the line 2 2 of Fig. 1 looking in the direction of the arrows. Fig. 3 is a plan view of the hanger and a portion of the frame.

Throughout the various views of the drawings similar reference characters designate similar parts.

Only a small portion of a truck is shown, as the remaining parts are either identical with the prior art or with the disclosures herein made.

The truck is provided with the usual wheels 1, axle-boxes 2, and side frames 3, which have the usual pedestals or yokes 4, which include the axle-boxes 2. The usual coiled axle-box springs 5 are placed between the pedestals and the axleboxes. The top cord 6 of the side frame 3 supports a pendent link 7, which has hooks 8 at its lower ends that engage the lower cap 9, on which rests a coiled spring 10, which coil-spring also has a cap 11 resting thereon. The caps 9 and 11 each have fiat portions 12 and 13, respectively, which engage a strap 7 and serve to keep these caps true. The cord 6 is provided with ears 14 where the strap 7 rests upon it, and the upper surface of this cord and these cars is made as nearly flat as possible by the shaping-dies, so that the strap 7 will have little or no tendency to swing transversely of the truck, the strap 7 also being flattened at this part. Provided this function is performed the exact shape of the ears 14 is not material; but it is preferable to shape them so that they extend beyond the side edges of the strap 7, as shown.

As is apparent from Fi 2, the strap 7 is splayed outwardly to further assist it in resisting all stresses which tend to produce a lateral swinging ofv the spring-plank and its separate parts.

The upper cap 11 has an eyebolt 15 secured to it in the usual manner, which bolt extends up through the cap 9 and coil-spring 10. The loop or eye at the lower end of this bolt 15 receives the end of the equalizing-bar 16, I

which is held in position by suitable nuts 16*, threaded onto the end of the bar 16 in the usual manner.

The spring-plank 17 is supported by the equalizing-bar 16 in the conventional way.

From the foregoing it is apparent that when my improved truck is in use the outward splay of the links 7, together with the flat surfaces by which they are supported, cause them to hang true with little or no lateral swing. This feature is of great value, for the reason that the link lies steady and true except when going round a curve or a similar occasion, when the link is thrown transversely, as in prior structures, one embodiment of which is shown in the Brill et al.

Patent No. 816,294. As soon as the curve is passed the link automatically resumes its normal position.

Other embodiments of my invention may be made which include its essential characteristics, so that I do not regard it as limited to the structure herein disclosed, but as broad enough to cover all structures that come within the scope of the annexed claims.

Having described my invention, what I claim is- 1. In a car-truck, a side frame having a top cord, ears extending from said top cord, said ears and cord being so shaped as to have a flattened surface; a strap so shaped as to engage said flattened surface, and elastic means connected with said strap for supporting a spring-plank so that the link will hang in its position of rest except When under l position of rest except When under unusual 1o unusual tension, and Will resume said posii tension, and Will resume said position as soon tion as soon as this tension is removed. l as this tension is removed.

2. In a car-truck or similar device, a side Signed this 12th day of May, 1906. frame having a to cord With a flattened sur- 5 VAL/FER; S. ADAMS face, an outward y-splayed strap supported by said flattened surface, and elastic means Witnesses: supported by said strap for supporting a l J. W. CAMAO, spring-plank so that the link Will hang in its J. W. STAFFORD. 

